Year	%
2000	18.79
2001	18.24
2002	17.15
2003	18.54
2004	17.03
2005	19.64
2006	19.76
2008	18.39
2009	17.74
2010	17.94
2011	18.36
2012	1.91
2013	1.92
2014	2.05
2015	5.52
2016	5.27
2017	4.82
2018	4.63
2019	28.04
2020	5.06
2021	7.89